Window-sash holder



W. MANDEL. v WINDOW sAsH HOLDER. APPLICATION FILED AUG.2I, 1920.

1,381,422'. l l PacentdJunev 14, 1921;

2 SHEETS-SHEET 2.

l Hena- W/LL/AM MAA/DEL UNITED STATES PATENT QFFEQE.

WILLIAM MANDEL, OF MINN'EALES,

WINDOlT-SASH HOLDER.

Application filed. August 21, 1920.

To all whom t may concern Be it known that I, VILLIAM MANDEL, a citizen of the United States, residing at Minneapolis, in the county of Hennepin and State of Minnesota, iave invented certain new and useful Improvements in Window- Sash Holders, of which the following is a specification.

My invention relates to window sash holders and an object is to provide a springcontrolled device which is associated with the window frame and sash so that thel latter will be held at any desired height without danger of falling. Another object is to provide means for locking the window at any desired height, such means being operable from within the room only.

The full objects and advantages of my invention will appear in connection with the detailed description thereof and the novel features embodied in my inventive idea will be particularly pointed out in the claim.

In the accompanying drawings, which, illustrate the application of my invention in one form,-

Figure 1 is a view in vertical section taken on the line 1-1 of Fig. 3. Fig. 2 is a view in vertical section taken on the line 2-2 of Fig. 1. Fig. 3 is a view in horizontal section taken on the line 3 3 of Fig. 1. Fig. 4 is a view in vertical section taken on the line H of Fig. 3. Fig. 5 is an inside elevational view of a window sash and frame having my invention applied thereto. Fig. 6 is a view in horizontal section onthe line 6 of Fig. 1. Fig. 7 is a fragmentary plan view of a perforated metal strip. Fig. 8 is an elevational view of the device.

The drawings illustrate a window embodying a lower sash 10, an upper sash 12 and a window frame 14, the latter being mounted in the walls of a building which include strips of lath 13 and plaster 15. EX- tending along the side of the window sash is a perforated metal strip 16 secured thereto at top and bottom by screws 18 as shown in Fig. 1. One of these strips is preferably secured to both sides of the lower and also of the upper sash. A roller 20 having teeth 22 for engaging the perforations in the strip 16 is supported in the window frame by means of a housing consisting of side members 24 and 26 secured together by screws 28, the housing being secured to the window frame by screws 30 passing through holes in the housing. The member 24 is pro- Spcccation of Letters Patent.

description.

Patented June 14, 1921.

Serial ITo. 45,GG7.

vided with an inwardly-extending shaft upon which the roller 20 is rotatably mounted by means of an annul r flange 36. A coiled spring 38 has its inner end secured to the shaft and its outer end secured to the roller 20. rlhe housing is provided with two pairs of forwardly-extending ears 4() and 42 between which entend, respectively, the pins 44 and 46. -Rollers 48 and 50 are mounted on these pins, the window sash being provided with a slot 52 to permit the sash to move up and down. rlhese rollers serve to hold the perforated strip 16 in engagement with the teethV 22 of the roller 20. ln order to loclr the window sash in any desired position l mount a rod 54 rotatably in the housing and to this rod is secured a metal plate 56 having perforations adapted to receive Jtwo or more of the teeth 22. The rod 54 extends tl rough the frame 14 and has a handle portion 58 by means of which the rcd may be rocked so as to cause the plate 56 to engage with the teeth 22 as shown in full lines in Fig. 1, or to cause said plate to be turned upwardly as shown in dotted lines in this ligure. it will be understood that complete window will preferably be provided with four of the devices just described, two at each side of the lower sash and two at each side of the upper sash.

The operation and advantages of my invention will be obvious from the foregoing The raising of a lower sash will cause spring` 38 to be unwound and low- @ring of lower sash will cause this spring to be wound up. The stiffness of the two springs preferably employed with each sash is sufficient to counterbalance the weight of the sash but not sutcicnt to cause the sash to move upwardly. It will be understood, of course, that the device is arranged to operate in reverse direction in connection with the upper sash. llilhen a sash is being raised or lowered the locking plate 56 is moved into its inoperative or dotted-line position, as shown in Fig. 1, and upon lowering this pla-te the toothed roller is prevented from rotating, and since the strip 16 is firmly engaged by the teeth on the roller the window will be securely locked in any adjustable position and cannot be operated from the outside.

I claim:

A window sash holder comprising a perforated flexible metal strip adapted to be fastened to the side of a window sash, a housllO ing adapted to be mounted in the Window frame adjacent the sash, a fixed axle Within said housing, a roller having an annular flange rotatably supported on said axle, a coiledspring secured at its inner end to said axle and secured at its outer end to said v roller, teeth on said roller adapted to engage ranged to hold said strip in engagementl with 10 said teeth, a rod rotatably mounted in said housing` a perforated plate secured to said rod, and a handle on said rod whereby said plate may be caused to engage or disengage said teeth at will.

In testimony whereof I hereunto aflix my signature.

WILLIAM MANDEL. 

